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National Park Service celebrates 100th birthday

The National Park Service oversees 413 sites, including 59 major national parks, covering 84 million acres from Great Smoky Mountains, the most visited, to the Grand Canyon, the Everglades and the newest addition, Katahdin Woods and Waters National Monument in Maine. The park service is celebrating its 100th birthday this weekend. Chip Reid has more on these timeless treasures.
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